Every good American mystery has a dateline. This one starts in April 1909. According to a century-old story in the Arizona Gazette, an explorer named G.E. Kincaid supposedly found a high-wall cave in ...

A cascade of muddy rainwater made Grand Canyon National Park a temporary safety hazard last week, following a devastating flash flood that left one woman dead and multiple people stranded. The flash ...

Hikers in the Grand Canyon National Park can be seen taking shelter in caves to avoid waterfalls of mud and slime caused by flash floods last week, in a video released by USA Today. The same floods ...

A recent study published in Nature Geoscience examines how the caves located beneath the Grand Canyon could help scientists better understand Earth’s past climate while simultaneously making better ...